Its been a while since i ran a stock pump but recently went with the w30 airtex pump and it has the inlet outlet and the other one i take it is for the canister ???? or a return line. Im pretty positive i capped it before but its been a while.

I know why the return line was engineered into gm cars and thats not my objective. . Im pretty sure its a return line but i have been running the same old holle chrome pump for too long lol.

can that line be plugged off ?

 

Return line. You can plug it.



- Eric